Acquisition of a Stable Isotope Ratio Mass Spectrometer and Supporting Instrumentation for Marine Biogeochemical and Paleoceanographic Studies [MRI/RUI]

0320940 altabet这项主要研究仪器奖授予了马萨诸塞大学达特茅斯分校，支持购买同位素比质谱仪（IRMS）、高压液相色谱仪（HPLC）和四极杆质谱仪（QMS），以继续和扩展生物地球化学和古海洋学的研究，重点是海洋环境中的氮循环。IRMS取代了现有的、老化的、越来越不可靠的仪器，旨在提高通量和可靠性，并保持这项工作所需的高精度。IRMS系统包括一个连续流接口和元素分析仪，用于CNS，以及用于化合物特定分析的气相色谱仪，以及硝酸盐的气体处理系统。高效液相色谱将主要用于氨基酸浓度分析，将实验室的能力扩展到一个新的领域。质量管理体系将用于两个目的。在实验室，它将用于对IRMS制备系统进行故障排除，特别是检测泄漏。第二种应用是作为船舶高精度气体比分析的海上仪器，特别是解决N2/Ar问题。这些仪器将被纳入马萨诸塞大学达特茅斯校区的本科生和研究生的教学和研究中，并通过新的校际海洋科学与技术研究生院在全系统范围内进行研究。该奖项由美国国家科学基金会海洋科学部支持

0320940AltabetThis Major Research Instrumentation award to the University of Massachusetts, Dartmouth supports acquisition of an isotope ratio mass spectrometer (IRMS), a high pressure liquid chromatograph (HPLC) and a quadrupole mass spectrometer (QMS) to continue and extend research into biogeochemistry and paleoceanography, emphasizing nitrogen cycling in the marine environment. The IRMS replaces an existing, aging and increasingly unreliable instrument, and is intended to improve throughput and reliability and maintain the necessary high precision this work requires. The IRMS system includes a continuous-flow interface and elemental analyzer for CNS, as well as a gas chromatograph for compound-specific analyses, and a gas handling system for nitrate. The HPLC will be mainly used for amino acid concentration analysis, extending the capabilities of the lab into a new area. The QMS will be used for two purposes. In the laboratory, it will be used to troubleshoot the IRMS preparation system, particularly to detect leaks. The second application is as a seagoing instrument for shipboard high precision gas ratio analysis, especially addressing N2/Ar. The instrumentation will be incorporated into teaching and research involving both undergraduate and graduate students at U Mass, both on the Dartmouth campus, and system-wide via the new Intercampus Graduate School of Marine Science and Technology. The award is supported by the Ocean Sciences Division of NSF.***